Question. A Wheatstone bridge is used to determine the value of unknown resistance X by adjusting the variable resistance Y as shown in the figure. For the most precise measurement of X, the resistances P and Q
(1) Should be approximately equal to 2X
(2) Should be approximately equal and are small
(3) Should be very large and unequal
(4) Do not play any significant role (NEET-2022)
Aditya Bhatt Answered question 13 February 2024
(NEET-2022)
NTA Solutions (2):-
Answer (2)
Sol. We know, a Wheatstone bridge is said to be most precise when it is most sensitive. This can be done by
making the ratio arms equal. Thus (2) is the correct option
Aditya Bhatt Answered question 13 February 2024
